Keystone — synonyms, definition

1. keystone (Noun)

7 synonyms
anchor backbone headstone key linchpin lynchpin mainstay
2 definitions

keystone (Noun) — A central cohesive source of support and stability. ex. "the keystone of campaign reform was the ban on soft money"

keystone (Noun) — The central building block at the top of an arch or vault.

2 types of
building block support
3 types
coign coigne quoin
1 part of
arch
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